Electrochemical oxidation

Advanced Oxidation Process

The electrochemical Advanced Oxidation Process (AOP) allows treating process and waste water, without adding other chemicals. The process is based on an electrolytic cell, wherein a voltage adapted to the problem is applied between two electrodes set in the fluid. This voltage will generate a corresponding electric current invoking several electrochemical processes and thereby destroying or modifying unwanted substances in the electrolyte.  Mainly carbon dioxide is formed.

Additionally enduring (long-term) disinfection effects can be achieved if chloride is present in the water forming oxichlorides. Oxichlorid is a very powerful disinfectant. Especially in the after-treatment of wastewater this effect is desired.

AOP_scheme_ENG

Disinfection with current

On the left an application example is given. It is shown that applying the AOP process under the respective conditions can extremely reduce the number of bacteria within a short amount of time. This was achieved without adding any other chemicals.

Bacteria_reduction_disinfection_oxidation_ENG

Field of application

The AOP may be used for detoxify, to discolor, to deodorize and to reduce COD or TOC value in process or waste waters in general. Most organic products can be treated, including:

  • Oil or fat
  • Aldehydes
  • Carboxylic acid
  • Nitrile and amine

Types of electrodes

The decomposition of the electrode material is a basic problem of electrochemical oxidation. GTWE uses special GTWE electrodes.

Our electrodes are extremely corrosion resistant. The problem of efficiency reduction of electrochemical oxidation through the simultaneous decomposition of water to oxygen and hydrogen (electrolysis of water) is also very strongly reduced by using GTWE electrodes.